The Sims 3 Quest For All Expansions

I'm getting a new computer next week for my birthday so i'm pre-downloading all expansion packs and stuff packs on an external hard drive. I'll be adding lots of mods and store content and custom content and wondering when the next expansion pack comes out do I have to reinstall everything? Or can I just download the update and expansion without uninstalling everything.  

Also will this computer be able to run sims 3 to the max  THANX:canttouchthis: 

Processor (CPU)	AMD FX-8320 Eight Core CPU (3.50GHz/8MB CACHE/AM3+)
Motherboard	ASUS M5A78L-M/USB3 (M-ATX, DDR3, USB 3.0, 3Gb/s)
Memory (RAM)	8GB KINGSTON HYPER-X GENESIS DUAL-DDR3 1600MHz, X.M.P (2 x 4GB KIT)
Graphics Card	2GB AMD RADEON HD7870 - DVI,HDMI,2 mDP - DX 11, Eyefinity 4 Capable
Windows OS	Windows 8 64bit
3rd Graphics Card
Memory - 1st Hard Disk	1TB WD CAVIAR BLACK WD1002FAEX, SATA 6 Gb/s, 64MB CACHE (7200rpm)

One More question... Will I be able to play other origin games once i crack sims 3 and everything ?

Thanx what about getting manual update patch ?

Yay! Thanx

Hmm..  I have sims 3 currently uninstalled on this computer because i'm going to switch to computers but when I installed the Upto July Store Content. None of the items appeared as store content but instead custom content do you know how to fix this ?

No it's alright it's just when I install popular homes from people like curtisparadis or chrissim3 houses i don't get all the content because it's replaced. I can manage it

well it could be the store fix? have you the latest store fix in the mods folder?

oh...