I'll be honest and say that even though I trained as a peer supporter for breastfeeding, I know nothing of 'harvesting colostrum' as it didn't really exist as a concept 18 years ago.
What I do know is that your body will only really kick into action producing colostrum with the hormones related to birthing, and the colostrum that you will produce is very small in volume anyway compared with the amount of milk that will follow.
Dry pumping without the sight or smell of your baby (even a photograph will help) is difficult as there is only manual manipulation to stimulate your let-down reflex. How much you can pump is not directly related to how much you can produce - some people successfully breastfeed but can't pump a single drop!
Popping baby on the boob just for the first couple of days would be a lot easier than pumping colostrum - I obviously don't know why you don't want to, but it is absolutely right for you if that is your choice. Bizarrely I'm quite squeamish about it even though I fed both of mine for over a year and support others doing it! Everyone draws the line somewhere.
Feeding formula right from is also absolutely fine if that is what you want to do - as long as you feed your baby and you are happy with how you are feeding your baby, everything will be grand.
It only gets difficult when hearing about people struggling to breastfeed which is almost always down to no support and poor advice, and being advised to switch to bottles when they didn't really want to.
You'll be fine, hope everything goes well.