My car is about 20 years old and has about 90,000 miles on it currently. Whenever I have a couple people get in the car my car hits a speed bump or "bottoms out". I know this is bad and I loose about 5 miles an hour per person over a speed bump. If its just me it never does it, I know the added weight will do that but if I replace my shocks will I have better results? Thanks!

 

Yes, it sounds like your suspension is at its last of days. Time to replace it!
KYB GR-2 Struts are pretty much the best all around struts.
If you don't want to spend the money, grab some STAGG SHS struts + springs on ebay for around $300-400.