Proper tool for installing engineered wood flooring

Lauzon 3 1/4 planks, tongue-and-groove. To clarify, it’s the stuff with 1/8" real wood on top. Over OSB sub-floor. This is all new construction. About 500 sf right now, but another 500 sf about 6 months from now.

1. If we use a brad nailer and tapping block, will we get a tight enough joint? (Note, we have a flooring nailer, but it seems we can’t use it with engineering flooring. One thing the flooring nailer ensures is a tight joint.)

2. Is it worth buying a proper flooring nailer for engineered wood, given the amount we have to do, and my husband’s 63-year-old knees? We’d have to order it online, neither Lowes nor HD carry them.

3. Also, any opinions on the problem of getting the correct angle on the nail, if we use the brad nailer. (Obviously with a dedicated floor nailer that’s not a problem).