Zodiac MX 8 Pool Cleaner setup question

After giving up on a Dolphin Dynamic due to the repair cost of approx 5-600USD, I bought and installed an MX8. I've noticed that in order to generate sufficient suction in my 15,000 gal pool, I have to shut off the main drain and almost fully close one of the two skimmers (the other skimmer has the suction tube connected to it - I don't have a dedicated suction line). This causes quite a bit of cavitation in the pump basket and air enters the system.

I do have a dedicated booster pump that is currently connected to the pressure side of the pool. This has a dedicated pressure pipe into the pool from when I used to have a Polaris cleaner. Can I change the plumbing around on this to the suction side of the pool and utilise this as a dedicated suction booster or is this a stupid question?

I am not the resident plumber around here but just wanted to pop in and say hello and welcome you to the Pool Forum! Somebody else will be along who may be able to answer your question.