I always wished to use just one security suite for everything but I just can't give up on Comodo Firewall, its the bast damn thing I have used and I don't trust their AV at all. So I have to go two ways anyway.
Bitdefender TS or any Bitdefender product is quite advance for home users, I wouldn't suggest it.
If you good with System files/Registry then I believe you can use it otherwise it's a loose end, you will end-up regretting for using it. I have used Bitdefender for 8 months on Linux based PC with 100 GB partition of Windows and for that period whenever I've to use it - it's usually gives me more then 600+ infected files. Which is something to consider unless you're security expert.