I don’t think you’ll have a lot of problems with timing out with the type of data you’re using. You already have a upper limit on the number of rows that can be added. PHP has a setting for max_input_vars which is 1000, in your scenario you have 186, well below this threshold, so again, you shouldn’t have a problem here.
Custom coding an application could be more stable or not, really depends on how it’s coded and how it works.
