Bogleheads can be very helpful— certainly better than many financial planners.
If you want you could look into Planvision— they are very reasonable, like $400. However to make that work you have to do a bit of upfront work to get your data in their system and they are more about the big picture than about optimizing every last dollar. However my guess is that is what you need so I would look on their website and see if it seems helpful.
They actually also have a podcast series on spotify which is just the main guy behind it talking for 3-5 minutes about different topics, which might be another way to test if they seem right for you.
Another option, if you want more handholding, might be Mason and Associates. They are a local financial planning group that specializes in helping feds (they also have a podcast if you want to check that out). Going to be more expensive but not sure exactly how much.
For withholding you could try the online withholding calculator—
https://www.irs.gov/individuals/tax-withholding-estimator