The line bubbles in the blurry picture indeed are bridging. Take some more effort to place the fibers exactly in the corner. After pulling a bit of vacuum, take a plastic stick, and push the fiber in the corners. The bag can be extremely oversized, make sure it does not bridge anywhere. We want creases, no bridges.
The Christmas Tree shaped bubbles are air that was introduced through a leak. If you see this, chase for leaks. Best thing is to chase them beforehand, doing a vacuum drop test, and using a leak detector to find the smallest of leaks.
But overall: absolutely not bad for a first timer.
A resin catch pot indeed is an insurance for your pump. You can also use it to degass the resin. (you will need a pump which can develop a deep vacuum for that).
As for resin: West also has the Pro-Set range which might be more suitable for you, or use a slow hardener (206 or 209)