Would it be beneficial at all to purchase the PC-Henshin card?
Being new to the Turbo I am a little in the dark about the different cards besides the CD system card.
Converters aren't worth the price, are inconvenient, damage the HuCard port, etc. The chopsado is the only one I'd recommend for short term. It doesn't make sense to use a converter to play 300+ games, instead of buying a PC Engine system for half the price. There's only one great Turbo exclusive and maybe 10 exclusives total.
A Turbo-CD combo also takes up 3 times the space of a PCE IFU combo or Duo and you can't play Arcade Card games on one without a converter or region mod.
If you have your heart set on keeping and playing the TG-16 you got first, which happens often with people first getting into Turbo/PCE, then you should use it exclusively to play overpriced Turbo-region HuCard games (often 2 to 10+ times the price of PCE versions). Then buy a PCE Duo or IFU combo for less than the price of a Turbo-CD or a Turbo-region Super CD system card.
If you just want to collect hardware for the sake of it, you're better off developing an attachment to the library/brand first. A SuperGrafx + PCE Duo or IFU combo is much cooler, more functional and still much cheaper than a Turbo-CD combo with Super CD card.