I understand the difference between IMC and IFR but I don't think practising IMC flying is a waste of time...
I don't think you do. It is not possible to 'practice IMC flying' - the aircraft will either be in IMC or it won't.
IFR time, which is what you have said you want, can be gained in either VMC (optional) or IMC (mandatory).
"Under the hood", as you say, is a great way to practice and maintain your IF flying skills - but is nothing to do with VFR/IFR or IMC/VMC.
but its going to be a very long road to 200hrs
It will be even longer if you do not fly, and correctly log, IFR.