Process checklist in CRM

Process checklist in CRM

Hi
We've created a new sales process that I'm mapping into the CRM - issue I have is that some of the tasks / milestones I would like to capture require very simple tick box responses but there are quite a few under a variety of sub categories so I don't want to create new fields for each one as I will run out of custom fields!  For example, one subset of checkpoints might be:  Gathering lead information - 1.  Size of company 2. Number of vehicles in fleet 3.  Current arrangements for fleet management 4. Health of company.  Each of these steps (1 - 4) should be checked off (and preferably commented on) with checklist remaining visible in Lead record and carrying across to Customer / Sales Prospect record when converted.  Any ideas?