Do you want us to point you in the right direction for purchasing used clubs or advice on how the get fit for a proper set? There are a lot of Titleist clubs available to you, you just need to figure out what your budget will be and select accordingly. This really is not the "Go Fund Me" forum. Glad to hear that you are ready to move to Titleist equipment and do wish you well as you continue to play this game.

Check out Dick's, Golf Galaxy, 2nd Swing.com, PGA Tour Superstore or some local golf shops in your area. They all have great deals on used equipment that the got from trade-ins. Stay away from ebay and Amazon.

There are a few reliable resellers on eBay. 2nd Swing, GlobalGolf, 3 Balls, and Dallas Golf. They also are authorized sellers of new equipment.
At least the above will guarantee for authenticity. Small sellers wouldn’t be able to identify a fake

I use GlobalGolf and 2nd Swing mainly for shafts. In San Diego, Golf Mart and Fairway meet my needs. And get fit. I bought my driver, 23H,695MB irons, Vokeys and Scotty from Golf Mart. Got the 7 wood, 27H and 64W wedge from Fairway. Fairway is where I have been getting my club work and fitting don’t (Jeff knows his stuff).

Find a local shop that does Titleist fittings and check out the new equipment. Go to a Titleist demo day in your area. The newest drivers and fairways are coming out this month. Please avoid eBay, it can be a crap shoot when you purchase clubs from any unknown buyer that is not certifying the clubs. Buyer beware. =)