Upgrade RAM or SSD - 2011 Macbook Pro

Hi,

My late 2011 MacBook Pro has become very slow. I plan to use my laptop for another 1-2 years and I was told to upgrade my RAM or move to SSD to increase its performance / speed.

Here is my current specs:

• Late 2011 Macbook Pro 13"
• OS: Sierra
• Processor: 2.8 GHz Intel Core i7
• RAM: 4 GB (2x 2 GB) 1333 MHz DDR3
• Graphics: Intel HD Graphics 3000 384 MB
• Storage: 750 GB SATA drive (350 GB used)

Note 1: I use my laptop for everyday things like a) Checking mail b) Working on MS office tools c) Browsing the net (opening multiple tabs). Most of the time I do all these simultaneously.

Note 2: My RAM mostly run at 80%-90% capacity all the time and it goes to 90%+ when I use multiple tabs for browsing in Safari/Chrome.

Due to financial constraints I can't upgrade my RAM and move to SSD at the same time and I need to choose one option.

Option 1: Upgrade to Crucial 16 GB (2x8 GB) RAM ~ $85 USD

Note 3: Apple recommends 8 GB max for my late 2011 MacBook Pro but unofficially it can support up to 16 GB.

https://www.amazon.com/dp/B008LTBJK2/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&col id=39ZVGXQRF3CZY&coliid=I3QILLSMY8PB0J&p…

Option 2: Move to Samsung 500 GB SSD ~ $130 USD

https://www.amazon.com/dp/B00OBRE5UE/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&col id=39ZVGXQRF3CZY&coliid=I3TS6MX0EZ9XCW&t…

I need to know which option I should do first. I can't afford to do both together.

Thanks

J