@jill If this isn’t likely to scare off the client, why not yes 
Also, for trial projects, remember that if nothing is available a fallback is to take a ticket from the Open edX project and get the candidate to contribute it upstream. It takes more unbilled time than a client project, but with recruitment speed is important - the more time between the moment a candidate applies and the actual hiring, the more likely they will have found something else (which we have seen apply to recent candidates btw). Also, contributing a task upstream used to be our main recruitment test, and it worked quite well.