I think you misunderstand me; the Wisdom spoken of in Proverbs 8:22-30 was indeed the Son of God. However, you seem to think that God and Wisdom can exist apart from one another as two separate beings but that is not the case; they are inseparable; they form one divine being. Otherwise, you are saying that God can exist without wisdom, which is ridiculous.
In Scripture the Hebrew hokma was used of the practical application of knowledge in some work or activity. Here is a good example:
NJB Exodus 35:30 Moses then said to the Israelites, 'Look, Yahweh has singled out Bezalel son of Uri, son of Hur, of the tribe of Judah, 31 and has filled him with the spirit of God in
wisdom, knowledge and skill in every kind of craft: 32 in designing and carrying out work in gold and silver and bronze, 33 in cutting stones to be set, in wood carving and in executing every kind of work.
We might not think of wisdom in English as what it takes to perform crafts, but in Hebrew this was so.
With his **first **creation Yahweh demonstrated his Wisdom in this way for the first time:
NJB Proverbs 8:22 '
Yahweh created me, first-fruits of his fashioning, before the oldest of his works. 23 From everlasting, I was firmly set, from the beginning, before the earth came into being. 24 The deep was not, when I was born, nor were the springs with their abounding waters. 25 Before the mountains were settled, before the hills, I came to birth; 26 before he had made the earth, the countryside, and the first elements of the world. 27 When he fixed the heavens firm, I was there, when he drew a circle on the surface of the deep, 28 when he thickened the clouds above, when the sources of the deep began to swell, 29 when he assigned the sea its boundaries – and the waters will not encroach on the shore – when he traced the foundations of the earth, 30 I was beside the
master craftsman, delighting him day after day, ever at play in his presence,
Interestingly, Wisdom Personified as the Son of God here is also depicted as the master craftsman. He is himself displaying Wisdom as depicted in the Hebrew language.
Once one understands what Wisdom means in Hebrew it is easy to understand how God could be without Wisdom in the sense of making something.
That is not to say he was not capable prior to this, but he demonstrated it for the first time when he created his Son.