It will definitely go to Planning Committee. But the time for objectors to speak is limited, so it's important that people comment on the application now whilst the planning officers are considering the application.
Clearly there will be pressure on officers from senior Council management and maybe some councillors for this to be approved due to the (perceived) benefits of: new jobs, some affordable workspace provision, 'investment' in Brixton (where Hondo lead others will follow), public realm improvements (outside the site i.e. on Pope's Road from S106/CIL contributions), creation of new retail units for new/existing business growth, but also importantly for the Council, significant future business rates revenue.
Councillors are generally influenced by public pressure from their constituents, so the more local people object, loudly, the more chance this application will be properly scrutinised by them. And if it is, then it should be clear that the harm does not outweigh the benefits.
That site is definitely an opportunity for development, but that development should bring genuine benefits to Brixton (like an improved station as well as new jobs) and be well designed. What's proposed is simply greedy. And we know why. They want/have to make a profit and will have paid through the nose for the site. I think the site was valued independently at around £5million in 2016ish before the owner sold it to Sports Direct for c.£12million in 2017!! Hondo will surely have paid at least double that only a couple of years later (and it's just a leasehold!!) (I found a Buzz article saying Sports Direct valued it in their accounts at £23million in 2018).
That's part of the planning/development problem, people overpay based on speculative and optimistic calculations of what development they can achieve (get away with) and then planners are almost forced into approving overdevelopment as anything else isn't 'viable' (heaven forbid a private company may have to take a loss due to mistakenly/purposefully ignoring planning limitations and overestimating value) and no one really wants empty buildings/sites sat around forever when they could be better used. Depressing.
Anyway - the best hope is that if people object and we get this application strongly refused, Hondo will be forced to come back with a better (and smaller) scheme. They clearly haven't listened so far.