I am new to mining but I have decided to give it a try with an used AvalonMiner 741.

I have a place where to set it where no one will be bothered by the noise.

An lte modem like the MiFi is what I am planning to use to bring internet there
https://store.gl-inet.com/collections/travel-routers/products/gl-mifi-4g-smart-router?variant=3077071732763
from what I understood what I need is a stable internet connection,  do you think this is an option, or should I go for normal internet?

The pool I should join is slushpool.

For the static ip address I can use this service
https://www.dynu.com

The avalon miner has a raspberry as a controller, is it possible to make it run through tor? This is the only topic I found
https://bitcoin.stackexchange.com/questions/3608/pool-mining-through-the-tor-network

Is it better to use a router with DD-WRT and set the vpn there instead of torify?

I really like reading this forums, lots of info and sometimes the occasional post from Satoshi appears in the search, ultra cool!!!