I’m new to crypto...
I need the most secure set up.

I have a super freaky windows pc. I don’t feel good about doing any crypto on it at all. It has a good paid virus software, but it does what it wants..and does these windows updates that scare the crap out of me.
I have an IPad Air 2 also.
My plan was to use Exodus until the Ledger Nanos arrrive in the mail.
I was going to go and buy a new Mac just to put the exodus on it, but then I found out that I can’t put EXODUS ON IT.
Would Jaxx be okay on my freaky PC.
Then I also heard that If I want until June, I can get a newer Mac. Should I wait..buy a new one now..
Help!
How do you guys have yours set up?