Too much distance and not enough elevation for a mainline. I'd put 20-25 taps on each of 2 3/16 laterals and run em all the way to the pump. Use 2 each 1/2" PVC tees and an elbow to make a manifold. One tee and an 8" nipple for your vac gauge and one for a lateral, and the elbow for the other lateral. I've got 36 taps 16 reds & 20 sugars on 3 laterals on my shurflo, the longest laterals are both about 700' long, the short one, (which the last 100' or so, runs uphill about 3' ) is 350' long. The last few runs I've got from 45-100 gallon per day out of these 36 trees, 1 tap each. 3/16 laterals with 5/16 drops. CDL health spouts.
I have two laterals on my gravity mainline in another woods, both are 1600' long, 44 taps on one and 48 on the other, way more than the 30 recommended, but with 50' of elevation after the last tap they both pull 28" of vac, and on nights it doesn't freeze, they run all night an into the next day.
Don't put em on the ground, they won't thaw and critters will chew on em. Tubing is pretty forgiving and you can stretch it pretty tight between trees, use 1/4" nylon rope like a chinese finger trap to secure it on the pump end if you need to. I have a few step in fence posts I use tp keep it off the ground in between trees.
Here's the 1/2"-5/16" adapters i use to connect my laterals to the PVC- I have to use 3/16-5/16 reducers from the maple supply house to reduce the last foot of tubing. There may be an easier way, but I have both sizes of tubing in my woods. Good luck.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1