I'll throw out a few ideas. No one has ever commented on my simple seed starting set-up, but I'll repeat briefly anyway. I do seed start 12 months/year. From about July on is for the next season, spare a few kitchen herbs. Total starts in the hundreds. Lost track weeks ago! Loss from no germination to losing seedlings up there. I am growing a mess of stuff most aren't, so much is trial and error on my part.
I utilize a couple of rooms in the house that have good windows for natural light, and add some electric lighting. No heat mats. The seedlings sprout (hopefully) and when up with some true leaves go to 4" pots. Depending on temps, may stay in for awhile or go out. April through Oct is easy for being outside, and plants happier.
There are now 4 mini greenhouses along the deck south face so have shelter from wind, and with deep eaves, from rain and frost. Those shelves are too hot in the summer months, and I lost some plants this season having them there too long. In the winter watch the temps. Some plants don't do well below 50 (such as tomatoes, basil), and some can take 30 if sheltered, some strong perennials 20.
As you are mainly planting for yourself, do your homework and make lists. These lists will change by the day of course! Figure what you need to start early, say Jan, then Feb, March etc. Your quick and easy annuals (marigolds, zinnias etc) can be 1st April or later. Our frost is mid April, as I am sure yours is. Don't let the pretty March and early April days fool you, as you will have frost, and could be a doozie! Have the starts out as much as possible, but be ready to pull in!
Perhaps you have an area in the house with windows E, S, or W that you could use, a few seeds starts at a time as you work through your list.