Recommend a BT/wifi card for my Hack

PC guy here, though have been using a MacBook pro since 2013 as my portable machine.

A friend setup my hack but has never used the Bluetooth features; hand-off, continuity and airdrop before. I thought my existing BT dongle would allow this to work (and I’m cabled in for interwebs over Ethernet btw, so don’t need WiFi) but starting to think the above features -require- the WiFi capability?

If so, Can someone please recommend & (UK) link me to a pci card to get the hand-off, continuity & airdrop features working please?

Spec: - intel 4790k - msi krait z97s mainboard - 32GB hyper series Kingston ram - nVidia 980Ti (stuck on High Sierra 😣) - Samsung 360 evo, 512GB ssd

Oh, and what would a compatible equivalent graphics card be that would allow me to upgrade to Mojave?

Would appreciate links to the BT/WiFi card greatly.

Thank you!