Hi dude, i have a similar plan to yourself i.e consolidating our position before promotion, but if you can achieve promotion to D3 this season you would be in a better position to achieve your target before moving onto D2. From my experience the bottom 10 teams in my last english D3 were not much of a step up, i went 4-6 (joined halfway through season finished 4-18) and my team was utter trash, your current ranking is a lot higher than a lot of the teams in that division!
There has been a high turnover of teams in my last division 3 too, i found it consisted mainly of D2 dropouts, those who missed out on promotion the year before, newbies and teams with users who gave up. You will have more money, better attendance, good chance of a top draftee and a nice promotion bonus. The main difference between our D4's tho, is yours actually appears to have a high number of user teams, there isn't a single user other than myself in my division, completely dead, which is a extra reason i need to promote this year and then my main focus for the campaign will be to build up my arena, train my young guards and draftees.