We are new here going to take over the 1st resale flat in our lives, a 3NG flat at AMK. Plan to only change all windows, doors, toilet bowls and perhaps the wall paint. Since im not going to change the rest of the house, is it still advisable to look for a contractor? or just find my own windows supplier etc and ask them to install as well? First timer here so not very sure. Greatly appreciate all advise from everyone here. Concerned with both quality of work and budget here.