Mosca's advice is right on-- fish hard with what you already have. Get some experience under your belt-- that way IF you do decide to upgrade down the road at some point, you can test drive a few different rods to find one that suits you're casting stroke and the type of fishing you do.
Remember, the fish couldn't care less how much your outfit costs. So for now, plan on getting out often and have fun.
Joining a local group like a Trout Unlimited Chapter or a local club affiliated with the Federation of Fly Fishers can have a big impact on jump starting your return to fy fishing. Most have group trips to local waters, casting clinics, tying classes and informative meetings. You're also probably going to meet some new fishing buddies and maybe a mentor or two.
here are some links to do a search on local groups near you:
TU Chapters: Council/Chapter Contacts | Trout Unlimited - Conserving coldwater fisheries
FFF affiliated clubs: Locate a Club
If you do have some extra bucks to spend, investing in a casting lesson or two, or a trip with a guide that will TEACH you different techniques on stream fishing the way you normally do (rather than focusing on fish landed) might be a better investment than new gear. For example, if you normally fish by wading streams, see if you can find a guide that will wade with you (instead of using a drift boat) and will teach you how to read water, show you some nymphing techniques, how to mend line to get a drag free drift etc. You might catch more fish in a drift boat on a "normal" guided trip, but the purpose would be to jump start your knowledge so you could replicate it on your own when fishing on your own. his would be something you'd want to discuss before hand with a fly shop before booking. (Some shops have on stream classes that would also be worth looking into as a less expensive alternative.)
Best of luck, and welcome to the forum.