I've updated the list and the starting hands are coming out pretty much how I want them to. Here's the deck if you don't feel like clicking the link. Thanks for the previous suggestions, any other insights are still welcome!
Mainboard:
1x[[Shanna, Sisay's Legacy]]
4x[[Sporecrown Thallid]]
3x[[Deathbloom Thallid]]
3x[[Slimefoot, the Stowaway]]
4x[[Yavimaya Sapherd]]
2x[[Shalai, Voice of Plenty]]
3x[[Tendershoot Dryad]]
2x[[Seal Away]]
3x[[Fungal Infection]]
2x[[Vicious Offering]]
3x[[Spore Swarm]]
3x[[Adventurous Impulse]]
4x[[Saproling Migration]]
1x[[Huatli, Radiant Champion]]
4x[[Forest]]
2x[[Plains]]
2x[[Swamp]]
3x[[Scattered Groves]]
3x[[Isolated Chapel]]
4x[[Sunpetal Grove]]
4x[[Woodland Cemetery]]
Sideboard:
2x[[Seal Away]]
2x[[Adamant Will]]
2x[[Vicious Offering]]
2x[[Settle the Wreckage]]
2x[[Vraska's Contempt]]
3x[[Broken Bond]]
2x[[Karn, Scion of Urza]]