[Closed] Which tyre on front/which tyre on back?

I've been running on Conti Speed Kings 2.1 for a while, have only just got round to getting new tyres as the ride is pretty uncomfortable with these. The back tyre wore very quickly too, anyway...

I've just got through the post a Maxxis HighRoller MaxxPro60a (26 x 2.35).

I'm going to have to stick with one Speed King 2.1 till I buy qnother tyre.

So, in the meantime, should I pop the HighRoller on the front and stick the good Speed King on the back?

And once I pull my finger out my arse and get another tyre, should I go for another HighRoller?

I am a proper fat b'stard riding on a hardtailand where I cycle most often is quite hard rock, the 60a was recommended as best for this?