Just these two?
Above you are talking about uploading files and including them as attachments... That requires a third product: Digital File Pro.
And wait a minute, because logically you might want to store the results of a form in a Database, so DataAssist might need to be thrown in too...
but hold on, your jobs not done, you are going to want to design those emails that get sent, so CSS Sculptor might need to be added so your emailed forms can look nice.
How about we give you them all for less than $100 with a subscription fee: extension-library/