if your interest is getting the most money, it sounds like portfolio building could be a good use of time in the short-term. for instance... if your current portfolio is worth a 50k/yr remote job, and you improved your portfolio making ability (say, with a redesign or a retelling of your work history, etc...) for the next 4 weeks, and got a job offer for 75k/year... then you would have increased your take by 50% in 4 weeks.

if you don't think your current portfolio could/should be improved, then I would suggest that you look at the companies you're interested in working for and understand the sorts of work they need a remote developer for... and target that skillset.

alternatively, start your own thing on the side... do it for 2 years while doing a remote job that you can handle with 75% attention.

good luck.