BIP 148 will activate SegWit by November, not necessarily in November.
Fixed.
Note that the split will possibly happen when the Median Time Past is after August 1st, so the split would likely happen ~1 hour after midnight UTC as the MTP is usually 1 hour behind real time.
Close enough; better to be early than late.
You should also include information about Segwit2x which will activate segwit via BIP 91 and then hard fork 12960 blocks after Segwit is activated.
There's no risk of that yet.
How do I check to see if my wallet will hold both the currencies? I'll bounce around on their website but does anyone have any pointers? Thanks in advance!
If you can export your private keys, then it should be
possible for you to split the currencies, though in any case it probably won't happen automatically.