Normally I would say no, for the reasons listed above, but one of the biggest things recruiters look at is big gaps like 2 and a half years. I would put it on, you can pose it as your main "job" and is now no longer a gap. It explains what you have been doing lately without needing to speak to anyone. Obviously during an interview it could come up, but your resume is the decider for the interviews in the first place.
The goal of the resume is to pass the screening test. Recruiters average about 6 seconds per resume. So if they see big question marks they will just move to the next one. To complicated and it gets a pass (why normally I'd say no to side hustles on a resume), big gaps, too many short time jobs etc.
Not that you asked, but resumes should be 1 page and ideally bullet pointed and chronological, which makes them easier to read and to the point. You get more bang for your buck in those 6 seconds if there is less but more important content. And make it easy to understand, don't forget recruiters rarely know what is actually needed for the job or its lingo, they just have a general idea of it.
Also just be aware that recruiting is a numbers game with 100s and sometime 1000s of resumes now that everything is online. It's totally fine to be picky about where you work, but I would actually recommend reversing tactics. Apply for anything in your field (whether "qualified" or not, sometimes they are desperate for anyone), you'll get more interviews and more offers. Then get picky. Do I really want this job? When they ask for how much are you hoping to make, make it outrageous, if they want you they will counter anyway. Since you are semi-FI use it to your advantage, you do not need to settle and I'm guessing not worried about a time frame to get a job. This is the best part about having F you money. DH turned down 2 or 3 offers before he found the perfect job with this strategy and resume style. It took longer but it was well worth it.
Good luck!