Havant can consolidate their mid-table London one south position further by completing a league double against Wimbledon.
The Hooks Lane club virtually guaranteed safety with a terrific win at Sidcup last weekend.
That victory moved Havant 12 points clear of the bottom three.
But coach Will Knight insists his team won’t rest on their laurels as they aim to finish the season strongly.
‘Last week’s win makes it very difficult for the other clubs to catch us,’ said Knight.
‘We want to put even more daylight between us and the bottom clubs.
‘After last week’s performance, we can head into this game with confidence.
‘The forwards really fronted up and provided the platform for our three-quarters.
‘If they can do the same again then our back-line will trouble anybody.
‘Wimbledon may be fourth but we have beaten them once already this season so we know we can do it.’
Influential centre James Reed faces a fitness test on his hamstring, and if he doesn’t make it Sam Berridge will be drafted in as a replacement.
Forward Rob Elsmore is unavailable but Luke Osborne is hoping to make a timely return from injury. Leading try-scorer Josh Blackburn also returns on the wing.
‘There is little danger of the players thinking they can take their foot off the gas,’ said Knight.
‘They know we have to press on until the end.
‘We have a tough game against the league leaders East Grinstead before finishing against relegated Trojans. Our target is to win two of our last three games.’
Havant: Morris, Blackburn J, Reed, Knight, Blackburn L, Living, Davenport, West, White, Anchor, Neil, Parkins, Ward-Golden, Goodger, Osborne, Powell, Sutton, Barfoot L, Berridge.
United Services cross the Solent to take on the Isle of Wight in Hampshire One, while bottom-club Petersfield face a tough test against third-placed Alton.
‘It’s another chance to see more players and blood a couple of new players.’
Services are boosted by stalwarts Matt Davis at hooker and Neil McRoberts at outside-half, with Rhys Bingham returning from navy duties at prop.
Fareham Heathens and Southsea Nomads are in derby action in Hampshire two.