Well, “reasonable” is all in the eyes of the beholder, sir, so I would probably say it's amply sufficient. It's largely sufficient certainly, to say the least, to cover the needs expressed in the fall economic statement and then some.
In my humble opinion, the $100 billion is probably premature to include in a borrowing authority act, although it's up to you parliamentarians to decide on that. It could have waited until such time as the government lays out its plans for that additional spending. If there are any unforseen expenditures that need to take place, they could have been accommodated or they could still be accommodated with that contingency amount of some $87 billion, which is, again, a very significant leeway in the context of a borrowing authority.