Quote:
a) Will 2018 UltraPak fit onto a 298 GB HD?


Yes, the total size is about 130GB

Quote:
b) Other than loading up a bit slower than it would off my internal HD, are there any drawbacks running BIAB 2018 from the USB hard drive?


No

Quote:
c) One of the improvements in BIAB2018 is said to be much lower latency. I have always experienced significant latency when using my keyboard with BIAB (which I always had to use a workaround for.) Does this improved latency in BIAB 2018 address keyboard latency? If so, will that improvement be negatively affected by running BIAB from the external mini USB hard drive?


Yes it does address keyboard latency via WASAPI, which normally works automatically without any special setup. This isn't affected by whether or not you have the program on an external HD.


Andrew
PG Music Inc.