the monk,
I don't think that you've done it too early, if not late.
Two inch tall seedling is still small. In a week or more they
can start growing much faster, under good conditions.

Probably your last frost date is only couple weeks away (mid April ?)
By then they will be just about ready, and not
that big. But in warm soil and air they can take off.
I am also growing same. I am also late. Mine have only first set of true leave.
But doing fine in cold frame.
I have other larger seedlings for early tomatoe harvest,
EARLY GIRL, of course.lol

Well I've got some "beefsteak" (they came with the mini greenhouse kit) and their about 4" tall and I just started some yesterday (sat 27) that are Red Ponderosa/Crimson cushion (seems they or may not the same thing.)

You are right on time for zone 7. pot up at 1st true leaves and keep roots at 60 degrees they will be just fine for 4/20 plant out. I could not pull up Tatian`s tomato base, but I believe pink ponderosa and crimson Cushion are the same. I grow both red and pink and can not tell a difference. GOOD LUCK Bill PS your 4/20 plant out will be healthier and most likely catch any thing you plant earlier.

Alright I'm on track. This years tomatoes are really just there for everyone else.. I grow them for friends and family. Based on their seed contributions C. Cushions won the coin toss over " U.P.V. ( Unknown Plant Variety) Cherry tomatoes.