'recourse to public funds' one of the reasons they can refuse your visa for, meaning that your husband cannot support you without gov/tax payers help..
yes its worth mentioning in the letter, state the reasons why you would not need 'recourse to public funds'
your hubby could put something like
i have a well paid job of £Xxxx and savings of £xxxx , also i own my own home, and after budgeting i have £xxx month left to support my wife, so there will be no reason for 'recourse to public funds', also my wife would be able to earn a good salary in IT further reducing any risk of need to 'recourse to public funds'