I'm running a team of SDE's and, from my experience, bringing development in-house is the last resort simply because of high risk/high cost. You have to pay your devs hell or high water whether they are moving at a rocket or turtle speed. We have worked with oil&gas and logistics customers, and their in-house development always drags 2-3 times longer than expected. If your pocket can allow it - you may try it but about 80% of customers I have worked with or talked to moved from in-house development to outsourcing it.

My team would love to look at your project for free just to give you an option to consider. Feel free to contact me at Polarwind99@gmail.com