Get on the DRO Pro's website, regardless of the DRO you plan to purchase, and check out the vast library of DRO installation photo's on users machines. It'll give you ideas. They also have "factory" videos. There may be installation pics and videos for your exact machine.
I just installed my DRO for the third time. First time was a bench top mill/drill 10 years ago, then transplanted it to an old Bridgeport 5 years ago, and I just transplanted it to my new ACER 3VS ii, buying longer scales each time. The scales for my DRO are magnetic so the installation is somewhat different than glass scales, etc.
I'm not familiar with your machine but I found a slick way to hold/adjust the scale for the x-axis that would've been useful on all 3 of my installations, so it may be useful on yours. Pic below. The slotted parts are easy to make, even without a DRO, and saves some frustration. Using 123 blocks, it allows adjusting the scale while you determine the best placement relative to your read head.
I would suggest mounting all your bracketry in the middle of it's travel. This allows adjustment/fudging later.
Take care to locate your holes correctly, and be mindful of the drill bit walking while hand drilling. Center punch, then center drill, then drill with a sharp bit can help. Be mindful of the drill angle when hand drilling, it's easy to get off perpendicular to your surface, and your hole may end up 0.050" from where you need it. Don't drill any holes until you're absolutely certain where they need to be. Be careful, breaking drills and/or taps is a giant PITA!
Don't overlook the indicator and setups you'll need to make sure the scales are square and aligned properly. This is important.
Take your time, it is tedious and will take awhile. Don't rush it.
The parts below clamp to your bed, and capture the scale, making it easy to position the scales and play with the read head location and alignment before committing. Put one at each end of the scale.
The bolts are over-kill but that's what the 123 blocks are threaded for. They are just over finger tight, and the scales can be "bumped" where you need them..