It sounds like you are getting some good advice on the suppressor end of your question.
I will ad to the host end of your question. When I started figuring out the host for my rimfire can I was looking at things. To add a threaded barrel and better iron sights to my 10/22 it was going to cost more than buying a new gun. I looked at a new 10/22 with a factory threaded barrel. Then I looked at the M&P 15/22. The 15/22 already had a threaded barrel and GI style sights. It also had the ability to use a lot of parts from the AR-15 platform. For the same price as upgrading the 10/22 I bought a 15/22 and have been happy with my choice. I got a second gun and it works well as a trainer for my AR-15 platform rifles.
I will ad to the host end of your question. When I started figuring out the host for my rimfire can I was looking at things. To add a threaded barrel and better iron sights to my 10/22 it was going to cost more than buying a new gun. I looked at a new 10/22 with a factory threaded barrel. Then I looked at the M&P 15/22. The 15/22 already had a threaded barrel and GI style sights. It also had the ability to use a lot of parts from the AR-15 platform. For the same price as upgrading the 10/22 I bought a 15/22 and have been happy with my choice. I got a second gun and it works well as a trainer for my AR-15 platform rifles.