Just because your home is in the Jodo sect, you don't necessarily need to aim to become a Jodo sect monk.
You can learn the doctrines of various denominations and choose the denomination that suits you.
Or, regardless of denomination, it's a good idea to look for a monk who would like to become this person's disciple.
Also, you don't necessarily have to go to college. Of course, if you go, you'll be able to study harder, and you'll make friends, so it's better to go.
Also, it is possible to study while working as a member of society, participate in regular training, and become a monk.
On top of that, if you want to become a monk of the Jodo sect, why not talk to the monk at the family temple first?
Maybe they'll become a master and monk, and maybe someone else will introduce you to another monk. Or maybe you can get some advice.
I'm hoping that you'll become a good monk. Please do your best.
For reference
http://www.rinkaian.jp/m/pravrajya.html
Also, I recommend that you sit as straight as possible on a regular basis.