ADHD BRAIN REQUIRES TARGET LEVEL HELP PRETTY PLEASE :)

Hey guys, total noob at this so apologies in advance if im not using the right terms. Its literally took me about 17 hours just to get my soundcard, mic and tests completed over the last few days . I've created at least 8 different measurements for L,R & Both in a few different positions and the curve doesn't look too bad compared to the examples seen online but i could be wrong. This is a home studio set up with some HS8 and a ECM8000 with cal file with the soundcard taken into consideration.

All my results have been averaged with Var smoothing and i have a house curve base on Harman to use although i am struggling setting the target level. I don't have an EQ or sub so this is the only measurement i need to consider i believe but my ADHD brain wont decide what to set the target level at. I mean i could just try and see but id really like some more opinions please. REW has given me 77, what are your thoughts please. Really appreciate any help i can get. Thanks x

just uploaded mdat too if this helps also

For your single speaker measurements a target of around 74 dB looks reasonable. When you measure L&R together the level goes up by around 3 dB as you have two sources contributing. It would be better to stick with individual measurements of each speaker.