Hypo-Clearing Agent or the like is not needed for film, but will reduce wash times somewhat and often helps to remove the pink/purple cast that stubbornly stay in some film. Don't use it if you use a staining developer, since it will remove the stain.
You don't have to leave the water running for your entire film wash time. Several changes of water with agitation during the wash cycle is equally as effective. (There's a sticky thread on film washing here on APUG somewhere that would be informative!)
Although Kodak says you can use Hypo Clear and then wash for only five minutes, washing a bit longer will not do any damage.
Your final soak in distilled water to get rid of the tap water minerals can simply be extended to a few minutes and give you an extra bit of wash.
The Kodak document linked to above gives you all you need for good processing technique.