MacBookPro 13" mid-2009 upgrade question!

[SolidTech]

Hello, it's my first time on the forums and I just made an account about 3 minutes ago. I'm planning on upgrading the RAM on my Macbook Pro for 4GB (2GBx2GB) to 8GB (4GBx4GB) I've already ordered the memory from crucial and it should be here by Wednesday. Now I'm planning on upgrading my HD to a SSD, my MacBook currently has 160GB (memory used)/250GB (total).Here come the questions.

1. Any recommended website to buy the SSD from?
2. How much memory should I purchase?
3. On a scale of 1-10 how difficult should installing the SSD be?
(I know installing RAM is easy)
P.S. I'm tech savvy software and networking wise but, when it comes to Hardware I'm a noob.

Thank You,

 

[B...]

RAM is memory, SSD is storage. Assuming you will transfer all data from old to new, I would get a 512 GB one. Check Amazon and Newegg.com but prices can be from $300 to 450. You have to catch it on sale. Installation is not super easy but not really hard; 3-5. I recommend the Samsung 840, 840 Pro or the Crucial m4.