You better wait awhile to set those tomatoes out. Mother’s Day is usually safe here in CoMO. You could probably push that up a week, or maybe even two depending on the micro-climate in your garden.
I noticed this evening that all of my plum trees, and the two Elberta peaches are starting to bloom. They’re probably gonna get bit by frost.
All the ‘matoes have been outside (in the little upright green houses with the flaps open) for about 10 of the past nice days. I'm thinking we'll try this on Easter morning.
I'll send a pix of the frost blankets and hoops from last year.
Use dry cleaners plastic bags to cover the trees, if you can ,
and throw a 'trouble light' of at least 30 watts under each tree , and you should minimize any frost damage.