What you have in mind is possible however, as you have various requirements you would need the help of a Developer to setup custom payment form for your owners. Assuming you have a "verified" PayPal Business account for the HOA, you do have access to the online button creator but, it does have it's limitations. For your needs, you would need a custom script developed to manage the data input and pass that data to the PayPal Checkout Screens. This is something that cannot be done with the online button creator. Else, you would need to have several different buttons created for your various options which would confuse your owners.
