GF as an addition to all the sound advice can I suggest a couple more ideas
First get along to your Local PFA strut or group. Most of them will welcome new faces, and homebuilders as a rule are usually more than keen to show off their toys. This will give you an idea about different construction methods and what will suit you best.
Secondly after you have decided on what you think might be a suitable type get friendly with someone who's already flying one and go for a couple of flights with them. Share costs if you have to, but what can seem to be a delight on a ten minute test jolly might not be so wonderful after a couple of hours.
Also figure in ground costs in your planning "Hot Ships" will need longer runways so Parking/Hangerage will be higher than if you build a strip hopper.
Third and most important HAVE FUN!
