You might be best off getting a set of poles that are usually designed for supporting tipi/pyramid tents as they'll be very strong and potentially very light/packable.
I did a quick search on Amazon and these poles might just be perfect for you. They're just slightly out of your budget, but I think you get a ton of adjustability and pretty decent quality for your money.
If you can't just tie a line to the same S-hooks you put your hammock on, you could bring some kind of pole to use instead. Trekking poles would work, or you could use a regular 'ol stick.
Alternatively Amazon sells all sorts of telescoping poles you could use as well, like these: https://www.amazon.com/Paria-Outdoor-Products-Adjustable-Poles/dp/B01MDJKV0E/ref=sr_1_4?keywords=tarp+pole&qid=1560514694&s=gateway&sr=8-4
Just tie each pole down with two guylines and then secure it to a pole on the other side of your stand.
think these are the best budget tents around.
Get some folding/telescopic tarp poles and plenty of guy lines and you should be able to rig some decent shade with a "porch" off your tent with some aluminet.
Thanks for posting. Great setup, especially the DIY custom sun shade with afforadable amazon poles Bravo!