Oftentimes I find that even people who have a 'chink' in their theological armor can be quite sound in other areas. Spurgeon was an immensely prolific fellow, much of which was Scripturally sound.
Unfortunately, he lived in a time when the Calvinist construct was much more widely held than it is today. I like to think that, were he alive today, he would be a more enlightened Biblical scholar in those few areas where his preaching was tainted with the construct.
Like most warm-hearted Christians who carry the excess baggage of the construct, he preached entirely at odds with the construct. He invited people to Christ and preached the Scripture as though it mattered (which of course it greatly does). He would not wasted his breath if he really believed that it had no effect and had all been decided by fiat before the foundation of the world.
That of course is why the Calvinist construct is always at war with true "whosoever will" promise of Jesus.
Oh, baloney!
Mid-19th century England was characterized by Wesleyan/Arminianism and the revivalism of Finney much more than any "Calvinist construct". C.H. Spurgeon understood the prevailing theological climate of his day and continually attempted to lead men back to the "doctrines of grace" that had been so much neglected and abandoned.
The fact that what we share here (The free offer of the Gospel to all) is the same as that shared by Spurgeon is of little consequence to you, is it? Never mind refuting what we actually believe, it is soooo much easier to make up some "construct" in your mind and then set out to destroy it.
C.H. Spurgeon wasn't called the "last of the Puritans" for nothing. If he was preaching today (and wouldn't that be a hoot!), he would still be proclaiming "...there is no such thing as preaching Christ and Him crucified, unless we preach what nowadays is called Calvinism. It is a nickname to call it Calvinism; Calvinism is the gospel, and nothing else."