I always like getting new or newer (used) clubs so far be it from me to tell anyone not to buy new clubs. Having said that, I have a few questions.
1 - What are you using today? You said you have hand me downs are they from the 1960's or are they a 2015 set?
2 - How well do you hit what you have today? Example: Do you hit everything pretty well, but struggle with your 4 iron. That's a different situation than "I need more distance throughout the bag."
3 - How consistent do you feel your swing is. Remember, consistent doesn't necessarily mean good.
4 - Are you working with a coach/pro whatever?
5 - This might be crazy but maybe wait on new clubs... If what you have is working at least decently you may want to consider spending that cash on playing a ton, or lessons. I really think the end of this season/start of next season there are going to be some crazy good deals. From what I've heard/read the big golf equipment guys aren't moving any 2020 product do to this COVID thing. If you can be patient, you may be able to get a lot for your money at the start of next season when 2021 stuff comes out and the 2020 stuff is still just sitting there.
Anyhow, just one opinion. Welcome to the forum. Look around and enjoy yourself.
Great playing with you guys yesterday. I was looking back through your rounds and now I know roughly how far some of my tee shots went (the ones in play) since my GPS/stats app wasn't working yesterday.