I would suggest to start with the theory e.g. Bristol Groundschool. Then do as much as possible on flight sims (PC and approved sims). Go flying with your friends to learn procedures, etc. Then for the practical training consider the airfield (ILS equipped) access and costs. Fields like LFAV and LFQT have cheap landing fees, good access and full RNAV, ILS.
I did my IR in 1984 by correspondence course (pre-PC) with Oxford. Then a week residential for 4 days revision and test on the Friday. Theory required circa 1 year (part-time). Practical training was at the High Wycombe sim, Piccadilly hotel sim and Stansted airport. Passed at total 203 hours (min was 200 hrs).
Good luck, Flyme