seed potatoes

Hi there containerman
I wouldn’t worry overly about how long you are chitting. Spuds can grow successfully without chitting if more convenient.
If your seed potatoes arrive in mid March you are close to when I would have planted anyway. The key is will the shoots be above the ground at the time of your last frost. If you are just growing in pots at home you can protect them by just covering the shoots with compost if a frost threatens.
The traditional time for planting potatoes was Easter due to this being when workers had free time to do it. Good luck HH

As said, chitting isn't necessary but may make your cropping date a bit later? I grow in tubs and do two layers of pots then cover with compost and top up with some grss cuttings to help retain moisture. Worked well for me last year with my first earlies.

I also chit them in my garage that has skylights, then plant out from the equinox, weather depending. I wouldn't be too worried about chitting to be honest, but it's something to do early in the season! Last year we had a hard frost at the end of April which killed all the foliage, they grew back fine though