Hi Chris,
I think expectations may need to be managed, 1000nm is a very long journey... But it is by no means impossible!
I know you said "up to 1000nm" but, I would think of it in terms of hours and not of range, 1000nm at 150kts is only 6h45, which you may very well be happy driving with a couple of stops for fuel on the way - flying it however will be a very different story! Whilst driving, your mind can wonder, whilst flying however, between listening out for traffic, talking to ATC, getting clearances through airspace / notam'd area... Altitude changes, waypoint changes, weather ahead planning, diversion planning, frequent fuel calculations, frequent engine / plane checks... you end up being extremely busy, and extremely tired. You also need to add at least an additional 20 minutes to every leg for taxying / airborne delays / re-routing...etc...
I did just under 900nm a day twice last summer within 5 days of each other and I was absolutely shattered after each of the days. I admittedly did fly a plane that only flew at a cruise of around 140KIAS, and it was particularly warm which doesn't help. I am not sure I would be capable of doing it frequently - but don't let this bog you down. That I can't do it, by no mean, means that YOU can't do it!
If you're looking at the M350, would the budget stretch to an M500 or M600? Or even a TBM800 or TBM930? The M350 has a cruise of around 200ish KTAS (i think). It won't shave a huge amount off of your 1000nm plan, but the M500 at 260KTAS, or even TBM930 at 330KTAS would be fully FIKI, most weather machine, and would enable you to commit to longer regular trips. These would require a substantial amount of training and hours built to reach, but if your goal is a high one, and this becomes your one and only passion, and your one and only major budget spend, there is no reason why after hard work and dedication you won't get there!
If it doesn't quite reach that level - have you considered the Mooney Acclaim Type S or Ultra models? They are supposed to cruise around 240KTAS, and I also believe slightly cheaper than the M350 (might be wrong about that one - but always thought it was...).
Something to bear in mind however, the PPL requires a minimum of 45 hours of flight (which means a minimum of 100 hours in the flying club / ATO for flight briefings etc...), in addition to a minimum of 100 hours of study for the ground exams, the taking of the exams and going over your answers which is another 15 or so hours, in addition to how ever many days of not being able to fly, waiting around for the weather to turn.
Then add the fact that you need to build up confidence, build up hours after you have done your PPL, perhaps gain further knowledge and do "advanced" lessons. Then obtain your night rating a further 5 hours, then maybe do your IR(R) rating further 15 hours + ground exam whilst you are studying for the IR ground exams (which I believe is probably around 300+ hours of study for the 7 exams).
And finally the CB-IR course which will likely be around 20-30 hours depending on pilot skill.
That's at least 260 hours committed for the PPL/IR(R)/Night + 300 hours IR exams + 60 hours CBIR (inc briefing) is 620 hours + hour building / confidence building to reach your ultimate goal. Of dedication, perseverance, etc... It is a major undertaking and one that should be cherished! In reality this will probably be well over 1000hours of investment to reach that goal (plus travel to/from the airfield of course). Might seem little to the layman, but spread it out over 1.5 to 2 years and you'll get a very different feel.
I am definitely NOT trying to put you off, just attempting to prepare you to the reality of achieving the goal that I myself am attempting to reach! I was so sure that within 1 year of passing I would have my IR, and plenty of hours under my belt. I am still working on that one - several years later!!
Also something to keep in mind, is that if you enjoy every aspect of these hours spent learning (as I still do) - the whole thing no longer becomes a chore - but a fantastic journey to enjoy and rejoice every time you go flying along the way. Flying is an amazing thing to do - share it and love it all along the way and the time will pass so quickly.
I hope this helps!