Good to see a Yakuza fan in the wild.
If the battery box is a problem, I would recommend an xbox one controller. Not to mention the triggers are way bigger
Get this
https://www.amazon.com/MSI-GV62-8RD-275-Performance-i5-8300H/dp/B07MCDNHJ3/ref=sxin_2_ac_d_rm?keywords=gaming+laptop&pd_rd_i=B07MCDNHJ3&pd_rd_r=7961f51b-3dff-4a6f-a358-7515e6428dcf&pd_rd_w=ih47A&pd_rd_wg=3VOjb&pf_rd_p=0bc35c17-1e0d-4808-b361-20ab11b00973&pf_rd_r=4Y1S0MTWJPJDV4G7957M&qid=1560030141&s=gateway
I would get any song with a repeated chord structure (A horse with no name, Most T-Series songs, Deadmans gun, heart of gold, etc)
and find a beat saber version of it, or make it