window 7 drivers for HP ENVY TouchSmart 15t-j100 Quad Laptop

I have purchased an HP ENVY TouchSmart 15t-j100 Quad Edition Notebook,
with a hybrid hard drive and Windows 8.1 64bit..

I would like to partition (via "shrink") and load a dual boot of Windows 7.

a) Do you foresee any problems doing so? Like with “Secure Boot” or "Fast Startup" or the SSD part of the hybrid drive, or loosing the "Recovery Partitions", etc?

b) Any conflicts that I may encounter with the secondary "Product key" activation, I believe Windows_8 stores the key in the BIOS?

c) Does HP have all the DRIVERS for Win_7 for the ENVY TouchSmart 15t-j100 Quad and do I need them or the ones for Win_8 will do?