I would say good rate for a BA with 5 years experience (and this includes both functional and little technical BA experience) should be around 90K annual. But it also depends on the project and salary range the company has decided. A high paced project will offer more than standard projects. 85K full time for a full time is not bad even though it is on a bit lower side.

Automation is quiet technical than standard BA job duties and responsibilities and involves some level of programming/coding. It is always beneficial to have additional skills set and expertise, so making a switch to Automation (with already BA experience on hand) will be a prudent move - results in self improvement and professional development - resume become more salable.

Good Luck.