Chris Cowlin's videos are great but you can't really get any idea as to a stadium's readiness from shots of its exterior. The vast majority of the work that remained at the time of the announcement of the delay was cosmetic - mostly the "veil". And it was always expected that there would still be much to complete at the stadium for months after its opening.
Since the announcement of the delay, work on the project has been slowed dramatically. Very little overtime work where, before, crews were working through the night; and far fewer workers on site in general. Also, as a consequence of the delay, Spurs have brought forward some elements of the project that were scheduled for next summer (among them, properly landscaping around the stadium as opposed to the temporary measure of tarmac). I can only reiterate what I said weeks ago - that the club and Mace were wholly confident of opening for the Liverpool game on 15th September. This information comes from a number of very well placed sources both within Spurs and Mace. Having worked so hard for so long and spent so much on overtime to get the stadium ready in time, they were all totally crestfallen when the safety systems bombshell landed.
Spurs will undoubtedly have to manage their finances prudently over the coming years. But they always do anyway. The club's announcement the other day revealed net debt of some £360m and profits for the last financial year of £160m. Given that most of the big ticket items on this build will already be included in that net debt, it shouldn't rise too massively from this juncture. And if profits continue at even a third of last year's level, Spurs should find little difficulty in both servicing and paying off the debt over a respectable period.