Hi John,
You will need to factor is some hour building too to get your 100 hrs PIC for CPL.
There are a couple of threads on pprune regarding which order to do your IR vs CPL in. Generally, people tend to do their CPL first.
Getting a class 1 medical sooner, rather than later is always a good idea. Just to confirm that there isn't anything that you're not aware of?
If you are after a breakdown of the costs for each, just take a look at any of the big modular flight training schools. Most of them publish a break down of their costs for each element of training, but be aware that there can sometimes be 'hidden' extras such as test fee, test aircraft hire, landing/approach fees etc. They can add up at an alarming rate!
Re: ATPL Theory. I'm going down the DL route with Bristol GS. If you do a search, you won't hear a bad word said about them. You can go at your own pace and save on accomodation costs.
Good luck with your training!