I would definitely look into leasing a bull for a 60 or 90 period... get them bred in June/July so the calves come in the spring once you are well settled there...
If the jerseys have calved once already, they should be able to handle most any angus bull... yes a "heifer or easy calving bull" would be a plus... but mine get bred to whomever is in the field once they have calved once.
Buying a bull is going to cost you in the $5-7500 range for a decent one with some sort of "record" as far as easy calving low birth weight or something... I would go with an angus or a lim-flex.... angus limousin cross... limi calves tend to be longer and "lean" as opposed to blocky built front ends. I would NOT do a simmental or a hereford.... both tend to be wider front ends .... Salvage value on a bull is about $2/lb around here for 15-2000 pound animals... so about $2500-4000 for a salvage value of the bull.... half of what you paid for him is a good figure to work with.
I don't know how many cows you have but renting/leasing a bull for a set period of time would be preferable... get the calves on the ground all at the same time for uniformity in the calf crop... and anyone that does not catch, then could be bred AI.... OR SOLD.......
Make sure that you have the bull covered by the farm insurance, and have a written agreement with the person leasing him... if he breaks a leg, breaks his penis, wrenches his shoulder or gets stifled.... you will have some responsibility....needs to be written in a lease in case of injury.... we figure the bull is worth $5,000... they lease for $50/cow for 60 days ....or $500/month.... and they feed him obviously... if he gets hurt, then whatever he brings at the stockyard comes off the "value".... and the lessee is responsible for the difference .