Windows 8 installation migrating from W7

[mibo 0]

Hi ,

had a motherboard probdem, so I want to change it and upgrade to SDD and Windows 8.

See that there are many problems and before making any changes I would like to see other opinions.

My idea is to leave the Window7 OS in the Bios and also an option for W.8.

I have FSX installed in a separate  HDD (drive G) and W7 OS on another (drive C).

Now I would like to install W 8 on a separate SSD but copy also drive G (fsx) to a separate SSD together with other flight sims.

In the Bios I could switch from 7 to OS 8 without loosing anything. So I could play FSX from OS 7 or 8 and choose also if I want the HDDS G or the new SSD. This would give me an opportunity to test

both and then in a future cancel one and keept only the one I like most..

The only thing  i would LIKE IS TO ABSOLUTELY AVOID A NEW INSTALLATION OF FSX, all add-ons, JS settings, a.s.o...

Could anybody give me a hint and discuss the idea.

Thanks

mibo