Everyone experiences that optimism/excitement at the beginning of the season, Hops. First one in the greenhouse gets the best plant selection, etc. And it's still early yet - way early. You're in the same planting zone I am - last frost date avgs about May 15th. So, even though it's technically spring the temps haven't been warm enough, long enough to plant out, as far as I'm concerned. (Lighter is a whole zone earlier & warmer than us.)
Until the night time temps stabilize around 45 the soil won't be warm enough outside to germinate seed. It was 19 here last night. Peas & salad greens are the first things I plant out (onion sets too; garlic goes out in the fall) The only thing I have started now are leeks (another long maturity plant) and all the cabbage family (cole crops). My grow lights weren't terribly expensive; maybe shop around.
I USED to start seeds at a west facing sliding door. And that worked very well, during a solar maximum. We're just starting to swing back from the bottom of a solar minimum - and the frequency of the light, the part of the spectrum the sunlight is generating - just isn't right for germinating these days. It only took a week to germinate my brussel sprouts - I'll have to go water & check today on the broccoli.
So you don't absolutely NEED south windows Hops. You could move your egg cartons around from window to windows - and also start seeds at staggered times, based on that variety's "time to maturity" requirements. So it won't be so many all at once, before you can start exposing them to the elements outdoors. Also - if you start now and use egg cartons (instead of deeper dixie cups) - you won't as much root structure when you transplant.
You can also extend your season with pvc pipe & heavy plastic "cold frames". The ones Mike made for me are sized to fit right over the raised bed and I just used rocks to hold the plastic down - but there are lots of methods; whatever works for you.
Over the years, I've convinced myself that the seasons are shifting away from the calendar/astronomical dates. Garden journals help with observations like this. What I used to do in March - the busiest time - is now shifted to April and the harvest season can span late August, Sept, Oct with sprouts/leeks coming out in November.
My time is getting used right now preparing beds... doing the yard/landscape work; some tree trimming... pruning, etc before the danged no-see-ums emerge. Oh - and some of the brush I'm cutting is among the cliff rocks - and the snakes are still sleeping. I don't work out there from May on.

Need to get my fruit trees, berries & shrubs ordered - go borrow the bobcat back & move some rocks. My firepit area is also going to double as medicinal herb bed... and I'm using the rocks to build sheltered planting nooks.
My ability to "do" outside starts to fade when the temp hits 80 - so I need to rock & roll now.